Ok, so my computer would not boot past the start up gray screen, so I resorted to booting from the os x disc. I had snow leopard at first, but now downgraded to the one before it because those are the only discs I have. It worked and the older version is running perfectly, it's just that it's all the default settings, all the stuff I had downloaded are in .dmg format, and some can't be found at all (photoshop, illustrator, starcraft, etc.) I think I have 2 copies of os x downloaded on my computer, but how would I access the first one? should I try to boot up with the disc in it again? btw, I don't have the snow leopard discs anymore... thanks for any help.